package day2;

/**
 * @author oldliu
 * @since 1.0
 */
public class SbTest {
    public static void main(String[] args) {
        //StringBuilder4
        StringBuilder sb=new StringBuilder();
        sb.append("java");
        sb.append("c#");
        sb.append(2>1);
        sb.append(14>23);
        sb.append(3.15134);
        System.out.println(sb);
        sb.reverse();
        System.out.println(sb);
        sb.delete(3,7);
        System.out.println(sb);
    }
}
